What type of noun is serenity?

What biospheres are involved in the water cycle? What gooey liquid in the plant and animal cells organelles? What part of a plant is a celary? What is a flipper during the 1920's what did they do? What is the seven key elements that need to be considered when planning the physical environment? What is ZnI2 periodic table? What is the most common cause of neonatal meningitis? What can you do to prepare for a natural disaster? Why predators rarely kill their prey to extinction? How could you show that the green solution from the grass contained chlorophyll? Does the reactivity of elements in group 2 increase going up or down? What was making food into a usable form in digestive system? Is streptococcus multicellular or unicellular? How do mowing gas molecules cause pressure? Can you hook up a 110 volt ac to 220 volt outlet? How would one overcome the effects of a competitive inhibitor on enzyme activity in the biochemical regulation of metabolic pathways? What would happen if the cells from one part of a developing embryo were transplanted to another part of the embryo after differentiation? Which microorganism species is most well adapted to life on the skin? A sentence with notion? How structure helps adsorption to happen efficiently?